Car door hanging truck



April 8,1947. w. JENKINS CAR DOOR HANGING TRUCK 3 Sheets-Sheet l Filed 0G13. 6, 1944 Apri] 8, 1947. W, JENKINS y2,418,586

CAR DOOR HANGING TRUCK Filed oct. 6, 1944 5 shets-sheet 2` f/S' '24,

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6 y Y. .I5 /5 i /Z @S56 /4- /4' jm/wwe Patented Apr. 8, 1947 UNITED STATES PATENT OFFICE CAR DOOR HANGING TRUCK William Jenkins, Los Angeles, Calif.

Application October 6, 1944, Serial No. 557,464

(Cl. Zhi-1) to provide a box car door handling truck which in use will greatly reduce the amount of manpower necessary to applying and removing box car doors.

A further object of the invention is to provide a box car door handling truck which in use will be safe in all respects reducing to a considerable extent the possibility of personal injuries which now occur in the handling of heavy doors.

Various other important objects and advantages of the invention shall become apparent -to the reader of the following description.

In the drawings:

Figure 1 is a side elevational view of the truck with one of the air cylinders in section.

Figure 2 is an end elevational View of the truck.

Figure 3 is a vertical sectional view taken substantially on line 3--3 of Figure 1.

Figure 4 is a horizontal sectional view taken substantially on line 4-4 of Figure 1.

Figure 5 is a fragmentary horizontal sectional view taken on line 5-5 of Figure 1.

Figure 6 is a fragmentary detailed sectional view taken on line 6-6 of Figure 3.

Referring to the drawings wherein like numerals designate like parts, it can be seen that the truck includes an elongated trough 5 having outwardly curved upstanding guide fingers 6 at the outer sidewall thereof.

Angle plates 1, 8 are riveted or otherwise secured as at 9 to ends of the trough 5 and each projects laterally beyond one side of the trough.

Rising from the plate 1, 8 and supported by brace members I are guide posts II.

An underslung axle I2 has truck supporting wheels I3 at the ends thereof. Sufliciently removed from the wheels I3 is a castor wheel assembly I4 suitably mounted under the truck.

Projecting laterally from under the trough at points inwardly of the plates 1, 8 are plates I5, I5 from which rise air cylinders I6, I6, each of which has a piston I1 therein, and from each of these pistons I1 and through a lug I8 in the top of the corresponding cylinder extends a rod I9.

A rack is provided on the truck for supporting a box car door A. This rack is made up of an elongated channel member 2l having rollers 22 mounted for rotation therein.

The fingers 6 serve to assist in guiding the rack 20 to rest position on the trough 5.

Rising from each end of each of the sidewalls of the trough member 2| is a bar .23, corresponding bars at the same side of the trough 2l being connected by bridge members 24 suitably secured at their ends to the upper ends of the bars 23.

The Aforegoing defines a rack made up of open side frames, this rack being open at its top and at each end so that a box car door can be readily inserted to rest upon the rollers 22.

Brackets 25 project laterallyfrorn the inner rack bars 23 and upwardly through thesebrackets extend tubes 26 in which the guide posts II .are slidable. Each of the tubes 26 is further secured in place by a connector 21 interposed between itself and the corresponding rack bar 23.

Risers 28 are provided on a bridge member 29 between the inner bars 23 of the rack v2|] and upwardly through the bridge member 25 and the risers 28 project the upper ends of the piston rods I9. Nuts 30 are provided on each piston rod I9 above and below the corresponding riser 28 so as to ailix the position of this end of the rod.

A vertical column 3| has its upper ends secured to the bridge member 29 and Vits lower into one side of the channelled member 2l and this carries a dog 32 engageable with a vertically disposed ratchet bar 33 which is secured as at 34 to the inner side of the trough 5. (See Figure 3.)

Brace members 35 serve to support a horizontal pipe 36 underlying the truck and which has its ends connected to the bottoms of the cylinders I6. A pipe 31 rises from the pipe 36 and communicates with a horizontal pipe 38 which has a bleed cock 39 at one end while its opposite end is connected to a supply air hose 40 through which air pressure is supplied to the cylinders of the truck.

On the supply side vof the connection of the pipe 38 to the pipe 31, the pipe 38 has a cut-off valve 39 therein and also a check valve 46.

In the operation of this apparatus, it can be seen that with the rack 2D lowered to the trough 5, a box car door can be moved into the rack 2U and the truck may then be moved to the box car on which the door is to be placed.

When the box car has beenv reached, and it is necessary to elevate the door to the proper elevation so as to slide the same to the usual guide ways on the car intended for the door, the air system is brought into use. First the bleed cock 39 is closed, after which the shut oi valve 39 is opened, permitting air under pressure to pass through the pipe 39 and check Valve 40 to the pipe 31 and from there to the pipe 3B. The air under pressure then passes into the cylinders I6, raising the pistons I1 and elevating the rack 20 uniformly due to the connection of the piston rods .I9 with the rack. As the rack is elevated, the dog 32 will ride over the teeth of the ratchet bar 33 and when the proper elevation of the rack. 20 has been reached, the dog 32, which is properly spring pressed, will engage the ratchet bar 33 and prevent the return of the rack, holding the rack in the desired position so that the door can be pushed along the rollers 22 and into the door guide way of the box car.

In order to lower the rack 2U, it is only necessary that the bleed cock 33 be opened and the `dog 32 released from the ratchet bar 33, this obviously after the shut-off valve 39 has been closed.

While the foregoing specification sets forth the invention in specic terms, it is tov be understood that numerous changes in the1 shape, size and materials may be resorted towithc'ut departing from the spirit and scope of the invention as' claimed hereinafter.

Having described the invention what is claimed' as new' is:

l". A box car door moving truck comprisingy a wheeled'r support, air cylindersV on the support, a doory receiving rack, guide means for the rack, said air cylindersbeing provided with pistons operativeA therein and rods extending yfrom the pistons and connected to the-said rack, a trough mounted on the support for receiving the lower portion of the rack and guide means on the trough for said rack.

door receiving rack, guide means for the rack,

saidair cylinders being provided with pistons operative therein and rods extending from the pistons and connected to the rack, a trough mounted on the support for receiving the lower portion of the rack, said trough consisting of a channeled member being provided with upwardly and outwardly disposed guide arms, anda bed for the support andiund'erslung axles" for the wheels of thewheeled support. Y

WHQLIAM` JENKINS.

REFERENCESv CITED The followingv references are. of recordi'in the file of this patent:

UNITED STATES PATENTS Number Name Date 698,896 Beierstorf Apr. 29`, 1902 '113,843 Rouck Nov. 1 8; 1902y 1,227,646 Metz May 2.9, 19,17'I 1,802,227 Welter Apr. 21,. 1931 794,262 Ten Eyck July 11, 1905 1,447,242, Fritz' Mar. 6,1923 1,555,103 Christian, Sept, 29, 19,25 

